A radio wave refraction correction method, device and system

Abstract

The invention discloses a method, a device and a system for radio wave refraction correction. The method comprises the following steps of: based on historical meteorological sounding data and ground temperature-humidity-pressure data, obtaining troposphere refractive index profile in real time; based on a GNSS (Global Navigation Satellite System) signal acquired by a ground-based singular GNSS receiver, obtaining an ionized layer vertical total electron content measured value in real time, and based on the ionized layer vertical total electron content measured value, inversing the ionized layer electron density profile through a genetic non-linear optimization algorithm; calculating the radio wave environment refraction error through a ray tracing method according to the troposphere refractive index profile and the ionized layer electron density profile; and correcting the target detection data. The method, the device and the system can improve the radio wave environment sensory capability in engineering, accurately provide the radio wave environment refraction error and effectively improve the detection precision of a target.

Description

technical field [0001] The invention relates to the technical field of radio wave environment detection and radio application, in particular to a radio wave refraction correction method, device and system. Background technique [0002] Due to the existence of the radio wave environment, the refractive index of the atmosphere is different from the refractive index in the vacuum, and the signal has a refraction effect during the propagation process, which makes the speed and direction of the signal propagation change to a certain extent, resulting in a certain measurement deviation. In high-precision measurement and control systems such as aerospace measurement and control, radar detection, and navigation and positioning, it is necessary to correct the refraction error of the system measurement value to compensate for the error caused by the radio wave environment. The perception and detection of radio wave environment is the key to determine the accuracy of atmospheric refrac...

AI Technical Summary

Problems solved by technology

Both of these methods have the problems of high cost and complicated technology.

For example, occultation detection needs to cooperate with low-orbit satellite joint observation, and is restricted by occultation events; network tomography requires multiple receivers to be arranged in a certain area and in a certain configuration, which requires a good solution for communication between them and data transmission, and the calculation takes a long time

[0005] Based on the above analysis, the current tropospheric and ionospheric detection methods have disadvantages such as complex operations, high operating costs, low real-time performance, poor mobility, and limited continuous observation capabilities, which are not convenient for actual operation and application in engineering, which to a certain extent restricts The accuracy of navigation, positioning, measurement and control equipment, etc., greatly restricts its functions and becomes a "bottleneck" for improving equipment and system performance

Therefore, it is necessary to develop low-cost, portable, real-time and high-precision detection methods and equipment that are convenient for engineering applications, so as to make up for the shortcomings of the lack of radio wave environment perception in engineering in my country, and to improve and improve the performance of navigation, positioning, measurement and control equipment, etc. Lift to provide support

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